ISO/IEC 15498:1997
Information technology - Data interchange on 90 mm optical disk cartridges - HS-1 format - Capacity: 650 Mbytes per cartridge

Standard No.

ISO/IEC 15498:1997

Release Date

1997

Published By

International Organization for Standardization (ISO)

Latest

ISO/IEC 15498:1997

Scope

This International Standard specifies the characteristics of 90 mm Optical Disk Cartridges (ODC) with a capacity of 650 Mbytes per Cartridge. The Standard specifies three related, but different implementations of such cartridges, viz. Type R/W Provides for data to be written and read many times over the recording surface of the disk using the thermo-magnetic and magneto-optical effects. Type P-ROM Provides for a part of the recording surface of the disk to be embossed by stamping or other means. This part of the disk is read without recourse to the magneto-optical effect. The part which is not embossed provides for data to meet the requirements of Type R/W. Type O-ROM Provides for the recording surface of the disk to be embossed and reproduced by stamping or other means. This type of disk is read without recourse to the magneto-optical effect. Type R/W, Type P-ROM and Type 0-ROM are also referred to as "fully rewritable", "partially embossed" and "fully embossed", respectively. This International Standard specifies - the conditions for conformance testing and the Reference Drive; - the environments in which the cartridges are to be operated and stored; - the mechanical and physical characteristics of the cartridge, so as to provide mechanical interchangeability between data processing systems; - the format of the information on the disk, called HS-1 (HS stands for "Hyper-Storage"), including the physical disposition of the tracks and sectors, the error correction codes, and the recording method used; - the characteristics of the embossed information on the disk; - the magneto-optical characteristics of the disk, enabling processing systems to write data onto the disk; - the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk. This International Standard provides for interchange between optical disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.

ISO/IEC 15498:1997 history

• 1997 ISO/IEC 15498:1997 Information technology - Data interchange on 90 mm optical disk cartridges - HS-1 format - Capacity: 650 Mbytes per cartridge